MIPS: Enable optimization of top-level code and generate deoptimization support lazily.

src/mips/lithium-mips.h

Index: src/mips/lithium-mips.h
diff --git a/src/mips/lithium-mips.h b/src/mips/lithium-mips.h
index 0a21649fa834b2d6bb882c56c507dda7994d7482..feb97d85379f632e20f1ca7772d9079ee1ded0ee 100644
--- a/src/mips/lithium-mips.h
+++ b/src/mips/lithium-mips.h
@@ -87,6 +87,7 @@ class LCodeGen;
   V(ConstantI)                                  \
   V(ConstantT)                                  \
   V(Context)                                    \
+  V(DeclareGlobals)                             \
   V(DeleteProperty)                             \
   V(Deoptimize)                                 \
   V(DivI)                                       \
@@ -1346,6 +1347,13 @@ class LOuterContext: public LTemplateInstruction<1, 1, 0> {
 };
 
 
+class LDeclareGlobals: public LTemplateInstruction<0, 0, 0> {
+ public:
+  DECLARE_CONCRETE_INSTRUCTION(DeclareGlobals, "declare-globals")
+  DECLARE_HYDROGEN_ACCESSOR(DeclareGlobals)
+};
+
+
 class LGlobalObject: public LTemplateInstruction<1, 1, 0> {
  public:
   explicit LGlobalObject(LOperand* context) {